Unknown Stone Object should be called Unidentified Stone Object like UFO. It was really strange to see so regular structure, looked like a kind of engine, came inside the natural stone. How much time passed after the process of stone formation, when stones melted and erupted from the volcanos? 1000 years? 10 000?

Natural stones and rocks in Ionian sea are so different from each others. Black vulcanic stones with the rest of lava, nicely rounded white chalk on the seabed, slices and pieces of sharp yellow rocks. Inside one of them, far away from the seashore, I found the Unknown Stone Object: